advantages of soaps over detergents

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From Encyclopedia

soap

soap a cleansing agent. It cleanses by lowering the surface tension of water, by emulsifying grease, and by absorbing dirt into the foam. Ancient peoples are believed to have employed wood ashes and water for washing and to have relieved the resulting irritation with grease or oil. In the 1st cent. AD, Pliny described a soap of tallow and wood ashes used by Germanic tribes to brighten their hair. A soap factory and bars of scented soap were excavated at Pompeii. Soap fell into disuse after the fall of Rome but was revived in Italy probably in the 8th cent. and reached France c.1200; Marseilles became noted as a soapmaking center. Although soap was known in England in the 14th cent., the first English patent to a soapmaker was issued in the 17th cent. The industry was handicapped in England from 1712 to 1853 by a heavy tax on soap. In the American colonies soap factories appeared at an early date, and many housewives made soap from waste fats and lye (obtained by leaching wood ashes). The manufacture of soap was stimulated by Chevreul's discovery of oleic and stearic acids in the early 19th cent. and by Leblanc's method (1791) of preparing soda from salt. Chemically, soaps are metallic salts of fatty acids . The manufacture of soap is based on a chemical reaction (saponification) in which an alkali acts upon a fat to form a metal salt (soap) and an alcohol (glycerol). A number of methods may be employed to make soap, but all are based on the same principle of operation. Fats and oils (often blended) are heated in a large vessel, then enough alkali to react with all the fat is stirred in. Salt is added, and the soap then forms a light curd that floats to the surface. Glycerol, a valuable byproduct, can be distilled from the liquid residue. To produce a purer soap, the curds are washed with salt solution, water is later added, and the solution is allowed to settle; the upper of the two layers thus formed is the pure soap, called settled soap. It is thoroughly churned, poured into huge frames, cut with wires, shaped, and stamped. Hard-milled soap is run over chilled rollers and is scraped off as chips which are rolled into ribbons, cut, and shaped. Soap is marketed also as chips, flakes, and beads and in powdered form. Soap powders, as distinguished from powdered soap, contain builders that assist in rough cleaning. Soaps differ according to the lathering properties of the fat or oils and according to the alkali employed. When sodium hydroxide is used as the alkali, hard soaps are formed; potassium hydroxide yields soft soaps. Aluminum, calcium, magnesium, lead, or other metals are used in place of sodium or potassium for soaps used in industry as paint driers, ointments, and lubricating greases and in waterproofing. Fillers are added to many soaps to increase lathering, cleansing, and water-softening properties; the sodium salt of rosin is commonly used in yellow laundry soap to increase lathering. Soap substitutes include saponin-containing plants such as soapwort and shagbark and the modern soapless detergents (usually sulfonated alcohols), which may be used in hard water and even in saltwater without forming curds.


From Yahoo Answers

Question:

Answers:Soap isn't so harsh.Its made mostly from veg oils.So kinder:-) The chemicals in detergent can cause skin irritations for some people.But if thats no problem to you and you don't mind using chemicals, then the detergent is more powerful at removing dirt.

Question:

Answers:1. Detergents don't form soap scum as soaps do in hard water 2. Detergents don't have to have the high pH that soap naturally does

Question:Most cleaning products today are not soap. More commonly they are synthetic detergents. What advantage does synthetic detergent have over soap?

Answers:Syndets are cheaper to produce and are not as affected by hard water (no ring around the bathtub, for example).

Question:most of the cleaning products today are not soap. more commonly they are synthetic detergents. what advantage does a synthetic detergent have over soap?

Answers:these are the ones that have more chemicals in to shift stubborn dirt and rinse much easier

From Youtube

Homemade Laundry Detergent :Homemade Liquid Laundry Soap 4 Cups - hot tap water 1 Fels-Naptha soap bar 1 Cup - SODIUM CARBONATE- I use the store brand for Clorox 2 1/2 Cup Borax - Grate bar of soap and add to saucepan with water. Stir occasionally over medium-low heat until soap dissolves and is melted. -Fill a 5 gallon bucket half full of hot tap water. Add melted soap, washing soda and Borax. Stir well until all powder is dissolved. Fill bucket to top with more hot water. Stir every few hours if you can and let sit overnight to thicken. It will be a big blob of gel in 24 hours but the more often you stir during the first 24 hours will help it not be so solid. STIR WELL before each use...it should be about the consistency of store bought detergent after you stir well. -Optional: You can add 10-15 drops of essential oil per 2 gallons. Add once soap has cooled. Ideas: lavender, rosemary, tea tree oil. -Top Load Machine- 1/2 to 1 Cup per load -Front Load Machines- 1/4 to 1/2 Cup per load *Arm & Hammer "Super Washing Soda" - in some stores or may be purchased online here (at Meijer.com). Baking Soda will not work, nor will Arm & Hammer Detergent - It must be sodium carbonate!!

Don't Use Antibacterial Soap, Or Overuse Antibiotics :People are dying from MRSA bacteria as the result of the overuse of antibiotics and antibacterial agents in soap, detergents and toothpaste. Antibacterial soap has also been linked to cancer, upsets hormones including thyroid, and contaminates breast milk. Some 72% of all liquid soap sold in the United States now contains antibacterial ingredients, as do many toothpastes. People who use antibacterial soaps and cleansers develop bacterial-born illnesses just as often as people who use products that do not contain antibacterial ingredients. This video mentions that it is natural for certain bacteria to be on our skin. Unlike what we've been taught, bacteria is not our enemy. Children exposed to bacteria in early childhood actually have stronger immune systems. Bacteria only becomes uncontrollable when our immune systems are suppressed by a lack of nutrition, stress, too little sleep and of course prescription drugs, which purposely suppress immunity. Over 95% of the time that antibiotics are prescribed it is for viruses such as colds and flu, despite the fact that this is futile - but it is big business. Bacteria fights back against attacks from antibiotics and antibacterial agents found in household products, and the result is "super bugs." The best way to stay healthy is to eat healthy and take high quality nutritional supplements. Get enough sleep, sunshine, and eliminate stress as much as possible. Antibacterial soaps bring in $16 billion per year for their makers ...